I don't have to place both feet flat on the ground when I ride a motorcycle, but....?

When i'm in a parking space how am i supposed to back out? i see lots of people use both of their feet stepping back slowly with the motorcycle to back it out, but how am i supposed to do it with one? am i supposed to wobble out with one foot? it sounds hard and i know i probably will fall. is their a proper way to back out with one foot?